[yogi_123rd]

I believe your starter is going bad if you have elliminated a weak battery as the cause.

The clicking noise is a classic sympom of a bad starter. Starters go bad in progressively worse stages. First it fails occationally, and later most of the time. The "click" noise you hear is a solonoid engaging the starter drive gear with the flywheel. This also causes electrical contacts in the starter relay to line up and send battery voltage to the starter motor.
In bad starters, over time, the drive gear can get damaged from repeatably contacting the flywheel gears so it does not make fully contact with the flywheel (and the relay contacts don't line up).
Also, over time, starters fail when the relay contacts become burnt and pitted. As the relay, solonoid and drive gear are all part of the starter you replace the starter as a unit.